Hello,I am building a current sensing appliance. I am using XMC4500 application processor and TLI4970 current sensor. How should I set up the SPI Mast...
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Hello,
I am building a current sensing appliance. I am using XMC4500 application processor and TLI4970 current sensor. How should I set up the SPI Master App on XMC4500? I've already played around with it but I get no sensible data from the TLI4970.
I attached spi master app config:
I am using this code:
/*
* main.c
*
* Created on: 2016 Feb 24 17:50:15
* Author: Lukas Erlacher
*/
#include //Declarations from DAVE Code Generation (includes SFR declaration)
#include
#include
#include
union {
uint8_t spi_bytes[2];
uint16_t spi_word;
} spi_rx;
volatile uint16_t lmp[4] = {0xff};
volatile SPI_MASTER_STATUS_t sstatus = SPI_MASTER_STATUS_FAILURE;
int ct;
char line[17] = "________________";
void SpiReceive() {
sprintf(line, "%u", spi_rx.spi_word);
lcd_setcursor(0,1);
lcd_string(line);
ct++;
sprintf(line, "%d", ct);
lcd_setcursor(0,2);
lcd_string(line);
}
int main(void)
{
DAVE_STATUS_t status;
spi_rx.spi_word = 1;
status = DAVE_Init(); /* Initialization of DAVE APPs */
if(status == DAVE_STATUS_FAILURE)
{
/* Placeholder for error handler code. The while loop below can be replaced with an user error handler. */
XMC_DEBUG("DAVE APPs initialization failed\n");
while(1U)
{
}
}
lcd_init();
lcd_setcursor(0,1);
sprintf(line, "%u", spi_rx.spi_word);
lcd_string(line);
SPI_MASTER_DisableSlaveSelectSignal(&SPI_MASTER_0);
SPI_MASTER_EnableSlaveSelectSignal(&SPI_MASTER_0, SPI_MASTER_0.config->slave_select_pin_config[0]->slave_select_ch);
while(1U)
{
while(DIGITAL_IO_GetInput(&BTN_PUSH) == 0)
{
}
while(DIGITAL_IO_GetInput(&BTN_PUSH) == 1)
{
}
sstatus = SPI_MASTER_Receive(&SPI_MASTER_0, spi_rx.spi_bytes, 2);
}
}
The receive interrupt fires, but the returned value is always 65535.
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